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