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