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