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