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