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