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