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)(19,25)(20,21)(22,26)(23,27)(24,28)(29,33)(30,39)(31,43)(32,40)(34,35)(36,41)(37,44)(38,42)(45,47)(46,48) involution — undirected(1,3,5,11)(2,6,7,9)(4,12,13,10)(8,16,15,14)(17,19)(18,25)(20,33)(21,29)(22,36)(23,31)(24,32)(26,41)(27,43)(28,40)(30,35)(34,39)(37,46)(38,45)(42,47)(44,48)(17,20,21,18,24,27,23,28)(19,25,29,43,32,40,31,33)(22,34,35,26,38,44,37,42)(30,39,45,41,46,48,36,47)(2,7)(6,9)(8,15)(14,16)(17,21,24,23)(18,20,28,27)(19,29,32,31)(22,35,38,37)(25,33,40,43)(26,34,42,44)(30,45,46,36)(39,47,48,41)(1,4,5,13)(2,8,7,15)(3,10,11,12)(6,14,9,16)(17,22)(18,26)(19,30)(20,34)(21,35)(23,37)(24,38)(25,39)(27,44)(28,42)(29,45)(31,36)(32,46)(33,47)(40,48)(41,43)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.