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