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