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