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