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