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