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