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