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