One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,8)(3,7,11,14)(4,5,12,13)(9,10,15,16)(17,18)(19,26)(20,25)(21,23)(22,24)(27,32)(28,31)(29,30)(33,34,38,40)(35,39,43,45)(36,41,46,44)(37,47,48,42)(1,3,6,11)(2,7,8,14)(4,9,12,15)(5,10,13,16)(17,19,22,21)(18,23,24,26)(20,27,28,29)(25,30,31,32)(33,35,38,43)(34,39,40,45)(36,42,46,47)(37,44,48,41)(2,8)(4,12)(7,14)(9,15)(18,24)(23,26)(25,31)(30,32)(34,40)(35,43)(41,44)(42,47) involution — undirected(1,4)(2,5)(3,9)(6,12)(7,10)(8,13)(11,15)(14,16)(17,18)(19,23)(20,25)(21,26)(22,24)(27,30)(28,31)(29,32)(33,34)(35,39)(36,41)(37,42)(38,40)(43,45)(44,46)(47,48) involution — undirected(1,3)(2,7)(4,9)(5,10)(6,11)(8,14)(12,15)(13,16)(17,20)(18,25)(19,27)(21,29)(22,28)(23,30)(24,31)(26,32)(33,36)(34,41)(35,42)(37,39)(38,46)(40,44)(43,47)(45,48) involution — undirected(1,5)(2,4)(3,10)(6,13)(7,9)(8,12)(11,16)(14,15)(17,21,22,19)(18,26,24,23)(20,27,28,29)(25,30,31,32)(33,37)(34,42)(35,44)(36,45)(38,48)(39,46)(40,47)(41,43)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.