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