One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,5)(3,9,10,7)(4,8,12,13)(11,15,16,14)(17,18)(19,25)(20,24)(21,22)(23,27)(26,32)(28,30)(29,31)(33,34)(35,38)(36,44)(37,40)(39,45)(41,43)(42,47)(46,48)(2,5)(7,9)(8,13)(14,15)(18,21)(20,28)(23,25)(26,29)(33,34)(35,41)(36,44)(37,40)(38,43)(39,45)(42,46)(47,48) involution — undirected(3,10)(4,12)(7,9)(8,13)(17,19,22,27)(18,23,21,25)(20,29,28,26)(24,32,30,31)(33,34,37,40)(35,41,43,38)(36,39,45,44)(42,47,48,46)(1,3)(2,7)(4,11)(5,9)(6,10)(8,14)(12,16)(13,15)(17,19)(18,23)(20,26)(21,25)(22,27)(24,31)(28,29)(30,32)(33,34)(35,38)(36,39)(37,40)(41,43)(42,46)(44,45)(47,48) involution — undirected(1,4)(2,8)(3,11)(5,13)(6,12)(7,14)(9,15)(10,16)(17,20)(18,24)(19,26)(21,30)(22,28)(23,31)(25,32)(27,29)(33,35)(34,38)(36,42)(37,43)(39,46)(40,41)(44,47)(45,48) involution — undirected(1,5,6,2)(3,9,10,7)(4,13,12,8)(11,15,16,14)(17,21,22,18)(19,25,27,23)(20,30,28,24)(26,32,29,31)(33,36)(34,39)(35,42)(37,45)(38,46)(40,44)(41,47)(43,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.